Discharge-valve.



A. L. BROWN,

DISCHARGE VALVE.

APPLICATION FILED 110119.19122.

Patfanted Dec. 2, 1913.

3 SHEETS-SHEET-L 1 TTRNEV A. L. BROWN.

DSCHARGE VALVE.

APPLICATION TILBD Nov.19.1g12

1,080,322. Patented 1390.2, 1913.

3 SHEETS-SHERT 2,

A. L. BROWNi L-ESGHARGE VALVE.

mangues FILED mm1@i 1912.

Paten' 206:12. 19213,

ALBERT L. BROWN, OIF LITTLE ROCK, ARKANSAS.

DISCHARGE-VALVE.

Specification of Letters Patent..

Application tiled November 19, 1912. Serial No. 732,327.

To all whom z't may concern Be it known that I, ALBERT L. BROWN, a citizen of the United States, and a resident of Little Rock, in the county of Pulaski and State of Arkansas, have invented certain new and useful improvements in Discharge-Valves, of which the following is a full, clear, and exact specification.

This invention relates to valves especially designed to be employed in ammonia compressors for controlling the discharge of the compressed gas.

One object of the invention is to provide for regulating the opening or lifting of the valve, and another object is .to cushion said valve in opening and closing, whereby the valve seat will not. be hammered out of shape or broken as has sometimes occurred in previous constructions.

A further object is to produce a valve structure capable of having its closing springl removed and another one inserted without taking off the head of the colnpressor or the cap of the valve.

Another object is to prevent the lubricatin oil from carbonizing and causing the va ve to stick open or closed, and still another' object is to provide for the proper movementof Athe valve without allowingthe igh pressure gas to pass up around the sidesI of the valve to the interior of the cap Where it would destroy the partial vacuum which is created in said cap when the valve moves to its seat and which serves to cushion said valve.

The invention will be, first fully described in connection with the accompanying drawings which constitute a part of this-specilication, and then more particularly pointed out in the claimsl at the end ot the description.

l'n the drawings, in which similar reference cha 1actors are used throughout to designate the same parts, Figure 1 is a cent-ral vertical section of an ammonia compressor embodying my improved valve structure, Fig. 2 an enlarged centra] vertical section of the valve mechanism alone; Fig. 3 is a section taken on the line of Fig. 2; Fig. 4 is a se tion taken on the line 4-4 of Fig. 2; Fig. 5 is a section taken on the line 5-5 of Fig. 2, and Figs. Gand 7 are separate detail views of the concentric tubes for con'- trolling -the spring ressurc and vacuum cushion for the vaive, and for feeding the lubricant.

The compressor illustrated in Fig. 1 in-' cludes a cylinder A into which the gas enters from the bottoni, a piston B arranged to be reciprocated in said cylinder and pro vided With a suitable suction valve {not shown), and a large valve C controlling the outlet of the gas from the cylinder.' Said outlet valve C is arranged at the upper end Of the cylinder above an inclined er curved seat D. In its vertical reciprocations said outlet valve is guided in a sleeve or collar E on the cylinder cap F which also carries the valve seat D. One or more. split rings G are placed around the valve C for the purpose of guiding the same and preventing gas from passing between 'said valve and the sleeve E. Three of these rings are illusn trated. the upper two being designed particularly for sealing purposes and the lower one for guiding 'the valve. Said valve'C may be made hollow shown, and pro vided with ay cup or container H for a helical spring I which may be seated on a removable plup It in the lower end of the cup, and at the upper end of said spring there may be laid a plunger disk J having a screw threaded socket j in its upper surface, see Fig. 3.

The upper end of the sleeve or collar E is covered and sealed bv a cap K through the top of which a tube L is screwed. said tube extending down into contact with the plunger disk J and up through the cover M of the compressor. The passage of the tube through the cover ot' the compressor suitablyY packed. as' atl m.. he. portion oi the tube arranged bet Ween the cover of the coni presser and the cap ot the guidinesleev. is provided with one or more perioratxotrs extending' or leading;l in diti'ercnt dnccifons as shown. rlhe portion of the tube within the sleeve is also perforated as at l.

A smaller tube N is arranged concentrically within the tube L and spaced therefrom so as to leave an uninterrupted passage between them. This passage is closed atI the top of the outer tube b'v a plug l" having a packing nut O. The inner tube extends up through said nut and carries at its upper end an oit cup Q. from \vhichoil is fed through said inner tube, the lower end portion of the outer tube., and the the latter to the spring container and the inner surface et the sileeve on `which the packing and guiding rings il siide as the valve reeiproeates.. The bore in the ioa'cr Patented Dec.2, 1913.

perforations Z in roux to its seat.

7. In a. compressor, the combination with a cylinder', of a reciprocating discharge valve, a sleeve for guiding said valve, a cap for said sleeve, a tube extending through and fitting in said cap and provided with a restricted passage therein forming an annular shoulder, another tube arranged withA in and spaced from the inner wall of the first tube, said inner tube being adjustabie to and from the shoulder in vthe outer tube, and means for feeding oil through the inner tube, said outer tube having restricted upenings above and below the cap for admitting gas to the interior of the sleeve, the openings below the Cap being also below the annular shoulder7 whereby the adjustment of the inner tube will roi'itrol the size of the inlet passage to the sleeve.

8. 1n a compressor, the combination with a cylinder, of a reciprocating discharge valve, a sleeve for guiding said valve, a cap for said sleeve, a 'tube extending through and fitting in said sap and provided with u restricted pzissage therein forming an annular shoulder, another tube arranged within and spaced from the inner wall of the iirst tube, said inner tube being adjustable to and from the shoulder in the outer tubef and in xaus for feeding eil through the inner` lube.y said outer tube having restrieted Opel'iings above and helen' the cap for admitting gas to the interior of the sleeve, the openings below the can being also below the annular ;-:"oulder, whereby the adiustynent of the inner tube will control the size o the inlet passage to the sleeve the nistrieted passage in the outer tube being arranged in alinement with the passage in the inner tube so that the adjustment of said inner tube will not interrupt the passage of the oil to the sleeve.

9. in a eoxnpressor the combination with a cylinder, of a niroeating disebarge j waive having a spring eontainer, n spring in said Izfontainer, a sleeve for guiding said i \alv`e, cap for the sleeve, a removable tube of greater diameter than the'spring nonstituting an abutment for the latter, and :1notlier tube arranged inside of the first tube and adapted to feed oil to the valve, said outer tube having openings above and below the cap for admitting a limited quantity of gas to the sleeve.

l0. In a compressor, the combination with a cylinder7 of n, reciprocating dist-barge valve having a spring container, a spring in .said container, a sleeve for guiding said valve, a cap for the sleeve, a removable tube ot greater diameter than the spring constituting an abutment for the latter, and another'tube arranged inside et the tiret tube and atialted to feed oil to the valve, said outer tubehaving openings above and below the cap for admitting a limited quantity of gas to the sleeve, and means for adjusting said inner tube whereby the im of the gas inlet passage to the sleeve is regulated.

ll. In a compressor, the combination vgit h a cylinder, ot a reeiproeating discharge valves having a spring mnlainer, :i bring in said container, a sleeve for guiding said valve, a cap for the sleeve. a ren'iovabie tube oi' greater diameter than the spring consti-- tuting an aialtinent for the latter, and another tube arranged insioe of the first tube and adapted to feed oil to the valve, said outer tube having openii'igs above and be- [uw the rap for admitting a limited quantity of gas to the sleeve, and means for adiustings-aid inner tube wherebv the size o the gas, inlet passage to the `:.leeve is regulated without intenrnpting the. passage of 'the o1! to the valve.

.'u testimony whereof have signed my naine to this speriieation in the prennee of two attesting .vitnesses.

ALBERT L. BROWN. 

